age = 8
if age >= 18 and age < 60:
    print("play the game")
elif age == 60:
    print("warning")
else:
    print("not play")   

# 只要满足or的其中一边为真，整个表达式就为真
if age < 18 or age > 60:
    print("not play")
else:
    print("play the game")

cars = {}
if cars:
    print("have cars")
else: 
    print("no car")

